Mastering React With Interview Questions,eStore Project

Loop through data collections and render them on the screen using the map method, handling primitive arrays like numbers and strings, as well as arrays of objects in React rendering.

Render a string array in a React component using useState and destructuring, then display each item as a list item with map, noting the need for a unique key prop.

Refactor array rendering by moving the map() over data into a separate function and assign its JSX to a variable, then display the product list to simplify larger React applications.

Dive into props and JSX with deeper combinations and tweaks. Learn how content becomes props via the children property and reference it within components for the React eStore project.

Explore how to pass attributes as props in a React component, use expressions and string literals, and render values, dates, and math results with or without curly braces.

Explore how React props default to true when no value is passed, demonstrate passing false and converting to string to reveal the output in a demo app.

Learn how React events use camelCase names like onClick, place handlers in curly braces, and avoid parentheses to prevent immediate calls, including returning a function to pass parameters.

Master synthetic events in React by inspecting the event object passed to onClick handlers, accessing e.target and innerHTML to retrieve element content, while noting cross-browser compatibility.

Create a multi-field React form by implementing individual useState hooks for first name, last name, and mobile, with onChange handlers and a submit action that displays data below.

Implement a single input change handler in React by using dynamic keys with ES6 square brackets, allowing first name, last name, and mobile to share one handler instead of multiple.

Learn to update state with functional updates and handle checkbox and radio inputs using the checked property, not value, and build a form that displays data on submit.

Use dynamic routes with the useParams hook to extract the product id from the url and render a single product detail page for any selected product.

Configure nested routes as children of a main route using the index attribute to refer to the parent route, with index defaulting to true.

Explore converting fixed product data into a dynamic dataset with useState, map over products to render links, and configure dynamic routes like /products/{id} using template literals.

Pass data to a child via the context attribute on an outlet. Retrieve it with the use outlet context hook, and display the selected product details.

Master the useNavigate hook to programmatically navigate after form submission in a React eStore project, using useEffect and setTimeout to delay and manage URLs.

This lecture explains multi-page applications and single-page applications, contrasts server-side and client-side rendering, and shows how React Router enables seamless navigation in a single-page application.

Master route matching with the Switch component and the exact attribute to achieve precise path matching. Understand root path behavior and how Switch renders the first match only.

See how the useContext hook replaces the consumer for simple access to the nearest context provider, returning the current context value and updating the cart total.

Set up a redux-demo application with React Redux, build purchase, cart, and total components, and display local product data with map for a dropdown.

Use the useDispatch hook to dispatch actions with a payload to a reducer, updating cart and total in the Redux store through event handling.

Connect a class-based purchase component to the Redux store using connect and mapStateToProps to access global state as props, and prepare for dispatching actions in later steps.

Explore deleting a cart item in a React Redux app using hooks, dispatching a delete action with index and price, and updating the total via the reducer.

Explore how asynchronous processes are handled in Redux, using dispatch and action creators to validate users and fetch data outside the store, while keeping reducers pure.

Learn to configure redux-thunk as a middleware, use applyMiddleware with createStore, and handle asynchronous dispatch with thunk for api calls and delayed updates.